#51EDC2
Closest named color: Aqua Marine (#2EE8BB). oklch(85.3% 0.144 170.9), rgb(81, 237, 194).
Aa
Black text reads best on this color (14.24:1).
About this color
#51EDC2 is a light, vivid teal or cyan. In OKLCH its lightness is 85%, its chroma 0.144 and its hue 171°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Marine (#2EE8BB), ΔE 0.023 away. Black text reads best on it, at 14.24:1.
| Hue family | Teals and cyans |
| Lightness | light (85%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Aqua Marine (#2EE8BB) |
| Black text | 14.24:1 |
| White text | 1.47:1 |
Values
| HEX | #51EDC2 |
| RGB | rgb(81, 237, 194) |
| HSL | hsl(163, 81%, 62%) |
| OKLCH | oklch(85.3% 0.144 170.9) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #51EDC2 | 1.47:1 | Fails | Lc -25.1 | Dividers and decoration only |
| Black text on #51EDC2 | 14.24:1 | AAA | Lc 81.7 | Fine for body text |
| #51EDC2 text on white | 1.47:1 | Fails | Lc 22.0 | Dividers and decoration only |
| #51EDC2 text on black | 14.24:1 | AAA | Lc -81.2 | Fine for body text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 200.
-
Step 50
50
#E6FBF3
oklch(97.1% 0.024 171)
-
Step 100
100
#C7F6E5
oklch(93.6% 0.053 171.1)
-
Step 200
200 (this color)
#51EDC2
oklch(85.3% 0.144 170.9)
-
Step 300
300
#00E1B3
oklch(81% 0.159 171)
-
Step 400
400
#00BC95
oklch(70.8% 0.139 170.9)
-
Step 500
500
#00A17F
oklch(63.1% 0.124 170.8)
-
Step 600
600
#00876A
oklch(55.5% 0.109 170.8)
-
Step 700
700
#007259
oklch(49.1% 0.097 170.7)
-
Step 800
800
#005D49
oklch(42.6% 0.083 171.6)
-
Step 900
900
#004E3C
oklch(37.7% 0.074 170.6)
-
Step 950
950
#002F23
oklch(27.2% 0.053 170.5)
#51EDC2 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #E6DEC0 | 0.147 |
| Deuteranopia (no green cones) | #D1CEC5 | 0.142 |
| Tritanopia (no blue cones) | #00EFE1 | 0.042 |
| Achromatopsia (no color) | #D5D5D5 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51EDC2
#51EDC2
oklch(85.3% 0.144 170.9)
- #FFB6D7
#FFB6D7
oklch(85.4% 0.094 350.5)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #51EDC2, closest first.
No curated palette has a color within ΔE 0.04 of #51EDC2.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Marine #2EE8BB ΔE 0.023
- Bright Teal #01F9C6 ΔE 0.034
- Light Turquoise #7EF4CC ΔE 0.040
- Turquoise #40E0D0 ΔE 0.048
- Light Teal #90E4C1 ΔE 0.049
- Bright Aqua #0BF9EA ΔE 0.053
- Greenish Cyan #2AFEB7 ΔE 0.055
- Light Aquamarine #7BFDC7 ΔE 0.055
Use #51EDC2 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.